A Surrey hospice has warned people living in the area not to be taken in by a bogus caller asking for donations.
The Phyllis Tuckell Hospice in Waverley Lane, Farnham, said it had discovered someone was making calls asking for people's bank or credit card details.
"It is terrible - really upsetting," said chief executive Sarah Brocklebank.
"It has come to our attention this week because people rang us asking why we were asking for this information over the phone."
Ms Brocklebank said she believed calls had been made over the past month and Surrey Police had been made aware of the scam.
"We would never ask for bank details over the phone and want people to be aware of that and not fall for it," she said.
"So far I haven't heard of anyone who has given their details, but it is a sad state of affairs that this kind of thing happens."